HD 127726
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 5.88[3] (6.61 + 7.08)[4] |
| Characteristics | |
| Spectral type | A7Vn + F0[5] |
| U−B Template:Engvar | +0.08[3] |
| B−V Template:Engvar | +0.21[3] |
| Astrometry | |
| Radial velocity (Rv) | −4[6] km/s |
| Proper motion (μ) | RA: −69.68[2] mas/yr Dec.: −21.90[2] mas/yr |
| Parallax (π) | 13.58±0.69 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 2.27 + 2.74[5] |
| Orbit[7] | |
| Period (P) | 29.93 yr |
| Semi-major axis (a) | 0.200″ |
| Eccentricity (e) | 0.160 |
| Inclination (i) | 158.0° |
| Longitude of the node (Ω) | 23.3° |
| Periastron epoch (T) | B 1983.85 |
| Argument of periastron (ω) (secondary) | 57.0° |
| Details | |
| A | |
| Mass | 1.64[8] Template:Solar mass |
| Rotational velocity (v sin i) | 205[9] km/s |
| B | |
| Mass | 1.46[8] Template:Solar mass |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist | |
| Database references | |
| SIMBAD | data |
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HD 127726 is a binary star system in the northern constellation of Boötes. The pair consist of a rapidly-rotating A-type main-sequence star and a fainter F-type companion, orbiting each other with a period of 29.93 years and an orbital eccentricity (ovalness) of 0.16. They have a combined apparent visual magnitude of 5.88, which is bright enough to be dimly visible to the naked eye. The system is located at a distance of approximately 240 light years from the Sun.
A third star, 4.26" from HD 127726 and magnitude 6.0, shares a common proper motion although any orbit would be thousands of years long.[10][8]
References
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- ↑ Template:Cite Gaia DR3
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